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FHP560 Controller
Applications Manual
Bosch Thermotechnology Corp.
Data subject to change
Page____ of ____
11.9 HP + CO
₂
UNIT TERMINAL BLOCK
TO BACnet
MS/TP
NETWORK
LWTS
RED
GREEN
WHITE
BLACK
TERMINATION DETAIL
RNET: SENSORS
ZS COMBO SENSOR (TEMP + RH + CO2)
STANDARD COMPONENTS:
DATS - DISCHARGE AIR TEMPERATURE SENSOR
LWTS - LEAVING WATER TEMPERATURE SENSOR
REFER TO UNIT WIRING DIAGRAM FOR FURTHER DETAILS
DATS
FHP560
Heat Pump Sequence of Operation – HP + CO
₂
Supply Fan Start/Stop:
The supply fan will be started according to the schedule. After the supply fan has been started the control sequence will be enabled.
Zone Control:
The compressor will cycle to maintain the zone temperature at setpoint.
Heat Pump Control:
When the zone temperature falls below the zone temperature setpoint the reversing valve will be disabled to provide heating when the
compressor is running. When the zone temperature rises above the zone temperature setpoint the reversing valve will be enabled to provide
cooling when the compressor is running.
Night Setback:
When in “unoccupied”, the unit will cycle as necessary to maintain the night setback zone temperature at setpoint.
Shutdown:
When the unit is shutdown by either a stop command or system safety the unit will be set as follows:
Supply fan will be on (user configurable)
Compressor(s) will be off
Outside Air Damper:
Field installed outside air damper with damper end switch (des) option must be con
fi
gured by the equipment integrator. Damper may be indexed
to open based on:
Occupancy:
damper opens 10 secs after unit enters occupied mode, and closes 2 mins after unit leaves occupied mode.
Fan operation:
damper opens 10 secs after fan is energized and running, and closes 2 mins after fan is de-energized and remains off.
CO
₂
levels:
damper opens if zone CO
₂
levels exceed 1000ppm (user configurable) and closes 2 mins after CO
₂
levels fall and stay below trip
value.
Air Economizer:
damper opens upon a call for cooling, if the outside air temperature and humidity fall within a user configured range (default:
50°F to 60°F OAT & 40%RH to 50%RH OARH). Compressor operation is disabled and only the fan is used to condition the space. If space
setpoint is not satisfied within 7 minutes of fan only operation, the first stage of compressor cooling is enabled.
When DES is con
fi
gured, compressor operation is not enabled until the switch is engaged (damper fully open).
Compressor operation is disabled 20 secs after DES fails when damper has been indexed to open.
HEAT PUMP
Point Name
Hardware Points
Software Points
Show On
Graphic
AI
AO
BI
BO
AV
BV
Sched
Trend
Alarm
Zone Temperature
X
X
X
X
Heating Setpoint
X
Cooling Setpoint
X
Supply Fan Command
X
Compressor Stage 1 Output
X
Compressor Stage 2 Output
X
Reversing Valve Command
X
Occupied Command
X
X
X
X
Discharge Air Temperature
X
X
Leaving Water Temperature
X
X
Outside Air Damper Command
X
X
Damper End Switch
X
X
Condensate Over
fl
ow
X
Lockout Alarm
X
Schedule
Totals
3
0
2
5
5
3
1
1
2
2
Total Hardware
Total Software
10
12
2
Table 17
